SP metadata namespace

[Lohr, Donald A - lohrda]

1) In most of the locally stored SP metadata files in their 
<EntityDescriptor.... lines, is the following XML Namespace:

xmlns:md="urn:oasis:names:tc:SAML:2.0:metadata"

...and in the body of the metadata itself can be seen the md: prefex, 
such as:

<md:EntityDescriptor...
   <md:SPSSODescriptor...

...which makes senses, because of their defined namespace 
(xmlns:md="urn:oasis:names:tc:SAML:2.0:metadata").


2) The remaining few of our locally stored SP metadata files define this 
namespace as:

xmlns="urn:oasis:names:tc:SAML:2.0:metadata"

...and in the body of the metadata itself can be seen with out the md: 
prefex, such as:

<EntityDescriptor...
   <SPSSODescriptor...

which makes senses, because of their defined namespace 
(xmlns="urn:oasis:names:tc:SAML:2.0:metadata"). This is true for the 
InCommon Federation metadata.


I've done some InterWeb searching and still do not fully understand the 
differences, advantages or disadvantages between the two:

xmlns:md="urn:oasis:names:tc:SAML:2.0:metadata"
xmlns="urn:oasis:names:tc:SAML:2.0:metadata"

Did one replace the other as a more modern namespace? Is one better than 
the other?

thx,
Don

-- 
D o n a l d   L o h r
I n f o r m a t i o n   S y s t e m s
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5 4 0 . 5 6 8 . 3 7 3 0
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